Brother Pocketjet 3 User Manual

Page 47
Cleaning the Printer’s  Exterior
Should the outside of the printer become dirty, clean it using a dry cloth.
NOTE:  Avoid saturating the cloth.  Do not allow water to get inside the printer.
Avoid the use of benzene, alcohol, paint thinner, or cleaners that 
are abrasive, alkaline, or acidic.  Such cleaners may damage 
the printer’s case. 

Page 48 Notes: 

Page 49
Chapter 5 - Reference
Indicator  Lights
The indicator lights tell you about the current status of the printer.  
Indicator Light  Table    = Solid          =Blinking
                                                                        \
 = Alternating Blinking
 
       POWER   DATA  ERROR                        = Doesn’t matter
  
    External power in use
      Battery in use, > 14.0 Volts
      Battery in use, > 13.1 Volts
      Battery in use, > 10.0 Volts
      Battery in use, > 6.6...

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POWER  DATA  ERROR 
    Bad checksum of 
fl ash  data
        No battery found when charging
    Time-Out when charging
    Low Thermal Head  temperature
    High Thermal Head  temperature
    Data Receive Error
Indicator Light Warnings
The POWER indicator light does not light
The printer is receiving no power.  If you are using the AC  adapter, make sure it is connected 
properly.  See page 1, “Connecting to an AC Outlet (Optional)”.  Make sure the AC  power 
outlet is “live”.  If you are using...

Page 51
Time-Out When Charging
The printer believes that too much time was required to bring the battery up to a normal 
charge voltage.  A maximum of 150 minutes is allowed for the charging cycle.  This is an 
indication that the battery should be replaced.
Low Thermal Head Temperature
The temperature of the thermal head is too low for reliable printing (less than 0°C (32°F)).  
You need to use the printer in a warmer environment.  
If this condition occurs in relatively warm environment (for example,...

Page 52
Self-Test Feature
The Self-Test Feature can be used to print a letter-size page test page without 
connection to a host computer.  The test page (See page 32) contains fi rmware level, 
image quality, and confi guration information.
1.  To print a test page, the printer must be turned on and idle, and paper must 
not be loaded in the printer.  
2.  Press the main switch for two seconds and release to place the printer in 
“Service  Mode”.  The  red DATA light will illuminate.  
3.  Insert a piece...

Page 53
Chapter 6 -  Troubleshooting
Over view
If you have diffi culty getting your printer to work properly, fi rst check to make sure you 
have done the following tasks correctly (See Chapter 1, “Setting Up the Printer”).
• Installing the battery or connecting the printer to an AC outlet
• Connecting the printer to your computer
Make sure you have installed and selected the proper printer driver as explained in 
Chapter 2, “Using the Printer”.
Look through the troubleshooting tips in this chapter for...

Page 54
Paper  Problems
The paper is  jammed in the printer
See page 41, “Clearing a Paper  Jam”.
Paper moves through the printer, but nothing appears on the paper
Make sure you are using Brother Genuine Thermal paper and that you are loading it 
properly with the print side away from you.  See page 39, “Inserting \
Paper”.  Also, 
check the Print  Density setting using the “Accessing Advanced Software Features”, 
Chapter 2.
Paper does not move through the printer even though the motor is 
running
If...

Page 55
The image is compressed and stretched in many places
Make sure the release  cover was not left open during printing.  If it is open, 
close it completely.
Make sure the paper is not slipping in the printer.  If it is, make sure the print head and 
platen  roller are clean.  See Chapter 4, “Maintaining the Printer”.
Make sure the paper is not wrinkled prior to  inserting it.  Also, make sure you are using 
Brother Genuine Thermal paper.
The image has light or white vertical lines
Make sure the...

Page 56
The top margin is incorrect
Make sure the correct margins have been set in the confi guration utility and your 
software application.  If not, set the margins for the top and bottom of the page 
as needed.
Make sure you are not inserting the paper into the paper input slot with excessive force.  
Always insert the paper gently.
The image for one page requires more or fewer sheets than you 
expected
Make sure the software application, the printer, and printer driver have been set to print 
the same...